The Argentine dynamo was pulled off after an hour of last night's international friendly defeat with Portugal, and has undergone an x-ray to determine the extent of his injury.

Initial reports claimed the 26-year-old would miss Saturday's trip to the Emirates, however Tata Martino has subsequently played down the severity.

He said: "We don't think it is anything serious. It was quite a tough blow he took. It was a tough knock. It cut the skin a little bit. But we have had a look at it and we are evaluating the situation."

Louis van Gaal should find out the player's availability in the very near future.